Samsung Galaxy A3 (2017) vs Samsung Galaxy A7 (2018)

Display

Display size

4.7 inches
6.0 inches

Resolution

720 x 1280 pixels
1080 x 2220 pixels

Pixel density

312 ppi
411 ppi

Technology

Super AMOLED
Super AMOLED

Screen-to-body ratio

67.85 %
74.55 %

Features

Ambient light sensor, Proximity sensor
Scratch-resistant glass (Corning Gorilla Glass 3), Ambient light sensor, Proximity sensor

Camera

Rear

Single camera
Triple camera

Main camera

13 megapixels
24 megapixels

Hardware Features

Autofocus, CMOS image sensor
Phase detection autofocus, CMOS image sensor

Specifications

Aperture size: F1.9
Aperture size: F1.7; Focal length: 26 mm; Sensor size: 1/2.8"; Pixel size: 0.9 μm

Second camera

 
8 megapixels

Hardware Features

 
Ultra-wide, Autofocus, CMOS image sensor, Back-illuminated sensor (BSI)

Specifications

 
Aperture size: F2.4; Focal Length: 18 mm; Sensor size: 1/4"; Pixel size: 1.12 μm

Third camera

 
5 megapixels

Hardware Features

 
Depth information

Specifications

 
Aperture size: F2.2; Focal Length: 24 mm; Sensor size: 1/5"; Pixel size: 1.12 μm

Flash

LED
LED

Video recording

1920x1080 (Full HD) (30 fps)
1920x1080 (Full HD) (30 fps)

Features

Video calling, Video sharing
Hyperlapse, Digital image stabilization, Video calling, Video sharing

Front

8 megapixels
24 megapixels

Features

 
Flash

Design

Dimensions

5.33 x 2.61 x 0.31 inches (135.4 x 66.2 x 7.9 mm)
6.29 x 3.02 x 0.30 inches (159.8 x 76.8 x 7.5 mm)

Weight

4.87 oz (138 g)
the average is 6 oz (173 g)
5.93 oz (168 g)
the average is 6 oz (173 g)

Materials

Back: Glass; Frame: Aluminum
Back: Glass (Corning Gorilla Glass 3); Frame: Plastic

Resistance

Water, Dust
 

IP certified

IP 68
 

Biometrics

Fingerprint (touch)
Fingerprint (touch)

Features

Touch sensitive control keys
 

Colors

Black, Gold, Pink, Blue
Black, Gold, Pink, Blue

Hardware & Performance

System chip

Samsung Exynos 7 Octa 7870
Samsung Exynos 7 Octa 7885

Processor

Octa-core, 1600 MHz, ARM Cortex-A53, 64-bit, 14 nm
Octa-core, 2200 MHz, ARM Cortex-A73 and ARM Cortex-A53, 64-bit, 14 nm

GPU

Mali-T830 MP2
Mali-G71 MP2

RAM

2 GB
6 GB

Internal storage

16 GB
128 GB

Maximum User Storage

9.7 GB
 

Storage expansion

up to 256 GB
up to 512 GB

OS

Android (7.0 Nougat, 6.0 Marshmallow)
Android (9.0 Pie, 8.0 Oreo), Samsung One UI

Battery

Capacity

2350 mAh
3300 mAh

Talk time (3G)

17.00 hours
the average is 23 h (1396 min)
19.00 hours
the average is 23 h (1396 min)

Internet use

 
 

3G

12 hours
12 hours

LTE

16 hours
14 hours

Wi-Fi

17 hours
14 hours

Music playback

41.00 hours
74.00 hours

Video playback

17.00 hours
17.00 hours

Cellular

LTE (FDD)

Bands 1, 2, 3, 5, 7, 8, 20
Bands 1, 3, 5, 7, 8, 20

LTE (TDD)

Bands 40
Bands 38, 40, 41

UMTS

850, 900, 1900, 2100 MHz
850, 900, 1900, 2100 MHz

GSM

850, 900, 1800, 1900 MHz
850, 900, 1800, 1900 MHz

Data

LTE-A Cat 6 (300/50 Mbit/s), HSPA
LTE-A Cat 6 (300/50 Mbit/s), HSDPA+ (4G) 42.2 Mbit/s, HSUPA

SIM type

Nano SIM
Nano SIM

VoLTE

 
Yes

Connectivity

Bluetooth

4.2
5.0

Wi-Fi

802.11 a, b, g, n, ac, dual-band
802.11 a, b, g, n, ac, dual-band

USB

Yes
USB 2.0

Connector

USB Type-C (reversible)
microUSB

Features

Mass storage device, USB charging
Mass storage device

Mobile Payment

Samsung Pay
Samsung Pay

Location

GPS, A-GPS, Glonass
GPS, A-GPS, Glonass, BeiDou

Other

NFC, ANT+, UMA (Wi-Fi Calling), Tethering, Computer sync, OTA sync
NFC, ANT+, VoIP, Tethering, Computer sync, OTA sync

Phone features

Sensors

Accelerometer, Gyroscope, Compass, Hall (for flip covers), Barometer
Accelerometer, Gyroscope, Compass, Hall (for flip covers)

Notifications

Haptic feedback
Notification light, Haptic feedback, Music ringtones, Vibration

Other features

Voice dialing, Voice commands, Voice recording
Voice dialing, Voice commands, Voice recording

Multimedia

Screen mirroring

Wireless screen share
Wireless screen share

Radio

FM
FM

Speakers

Earpiece, Loudspeaker
Earpiece, Loudspeaker

Headphones connector

3.5mm
3.5mm

Regulatory Approval

FCC approval

 
 

Date approved

Dec 21, 2016
Sep 13, 2018

FCC ID value: A3LSMA320F link
FCC ID value: A3LSMA750FN link

FCC measured SAR

 
 

Head

0.45 W/kg
0.50 W/kg

Body

0.74 W/kg
0.39 W/kg

Simultaneous Transmission

1.56 W/kg
1.59 W/kg

Wireless Router

0.94 W/kg
1.05 W/kg

Shopping information

In The Box

 
Charger, microUSB cable, Headphones, SIM Removal Tool, Documentation
This copy is for your personal, non-commercial use only. You can order presentation-ready copies for distribution to your colleagues, clients or customers at https://www.parsintl.com/phonearena or use the Reprints & Permissions tool that appears at the bottom of each web page. Visit https://www.parsintl.com/ for samples and additional information.